Efficacy of Hormonal (PGF and eCG) Treatment on the Reproductive Performance of Muturu Cows Crossed with White Fulani Semen under Natural Grazing Condition: A Research Work
Efficacy of Hormonal (PGF and eCG) Treatment on the Reproductive Performance of Muturu Cows Crossed with White Fulani Semen under Natural Grazing Condition: A Research Work
Nwakpu P.E., Obianwuna U., Olorunleke S., Uchewa, E.N.
An experiment was conducted at Abakaliki in Ebonyi
State during the period of dry season(less rainfall) and onset of rainy
season between the months of (February-May) at three locations. Two
locations were for the control while the other was used for the
synchronized. A total of 100 breeding cows of muturu cattle breed were
used for the study. A multi-stage selection process was used on the
basis of previous calving history. All animals selected were subjected
to scanning with drumniski i-scan ultrasound scanner to ascertain
pregnant and non-pregnant cows. All non-pregnant cows were further
scanned to ascertain their ovaries for growing follicles hence forming
our basis for cyclicity.100 breeding animals selected were randomly
allocated to two groups of 50 animals each for the control and the
synchronized. All animals in each group were managed on semi- intensive
production system where the cows have access to pasture and water.
The Fixed Time Artificial Insemination(FTAI) protocol was initiated on
random days of the estrous cycle of the animal designated as day 0,7 and
10 respectively. The cows each received CIDR(controlled internal drug
releasing device). On day 7, the CIDR was removed and 1ml of PGF
analogue(cloprostenol) and 2ml of eCG was administered intramuscularly
to each animal. The Kmacs and vasectomised bulls introduced into the
herd helped in estrous detection. On day 10, second dose of GnRH was
administered intramuscularly to each animal in the morning and 12hours
later, all animals were inseminated using semen from NAPRI crossbred
white Fulani bull. Results indicated that, 46 animals out of 50 retained
their CIDR in the period of 7 days. 92% of the animals showed vaginal
discharge at CIDR removal. The on-set of estrous was 31hrs after eCG and
PGF administration and lasted for 54hrs. It took the animals a shorter
period of time (32hrs) to come on heat after treatment. There was
increase in the follicular size at each treatment(Day 0, Day 7 and Day
10) respectively. The animals had 100% ovulation rate and 46% had
multiple ovulation which could be attributed to the effect of eCG on the
follicles. The hormonal treatment increased the follicular size and as
well induced the growth and development of pre-ovulatory follicles for
ovulation unlike in the natural state where we had only 64% ovulation
rate.
10.22161/ijeab/1.4.25
http://ijeab.com/upload_document/issue_files/25%20IJEAB-NOV-2016-38-Efficacy%20of%20Hormonal%20(PGF%20and%20eCG)%20Treatment%20on%20the%20Reproductive%20Performance%20of%20Muturu%20Cows%20Crossed%20with%20White%20Fulani%20Semen%20under%20Natural%20Grazing%20Condition_%20A%20Research%20Work.pdf
ijeab.com/submit-paper/
Nwakpu P.E., Obianwuna U., Olorunleke S., Uchewa, E.N.
An experiment was conducted at Abakaliki in Ebonyi
State during the period of dry season(less rainfall) and onset of rainy
season between the months of (February-May) at three locations. Two
locations were for the control while the other was used for the
synchronized. A total of 100 breeding cows of muturu cattle breed were
used for the study. A multi-stage selection process was used on the
basis of previous calving history. All animals selected were subjected
to scanning with drumniski i-scan ultrasound scanner to ascertain
pregnant and non-pregnant cows. All non-pregnant cows were further
scanned to ascertain their ovaries for growing follicles hence forming
our basis for cyclicity.100 breeding animals selected were randomly
allocated to two groups of 50 animals each for the control and the
synchronized. All animals in each group were managed on semi- intensive
production system where the cows have access to pasture and water.
The Fixed Time Artificial Insemination(FTAI) protocol was initiated on
random days of the estrous cycle of the animal designated as day 0,7 and
10 respectively. The cows each received CIDR(controlled internal drug
releasing device). On day 7, the CIDR was removed and 1ml of PGF
analogue(cloprostenol) and 2ml of eCG was administered intramuscularly
to each animal. The Kmacs and vasectomised bulls introduced into the
herd helped in estrous detection. On day 10, second dose of GnRH was
administered intramuscularly to each animal in the morning and 12hours
later, all animals were inseminated using semen from NAPRI crossbred
white Fulani bull. Results indicated that, 46 animals out of 50 retained
their CIDR in the period of 7 days. 92% of the animals showed vaginal
discharge at CIDR removal. The on-set of estrous was 31hrs after eCG and
PGF administration and lasted for 54hrs. It took the animals a shorter
period of time (32hrs) to come on heat after treatment. There was
increase in the follicular size at each treatment(Day 0, Day 7 and Day
10) respectively. The animals had 100% ovulation rate and 46% had
multiple ovulation which could be attributed to the effect of eCG on the
follicles. The hormonal treatment increased the follicular size and as
well induced the growth and development of pre-ovulatory follicles for
ovulation unlike in the natural state where we had only 64% ovulation
rate.
10.22161/ijeab/1.4.25
http://ijeab.com/upload_document/issue_files/25%20IJEAB-NOV-2016-38-Efficacy%20of%20Hormonal%20(PGF%20and%20eCG)%20Treatment%20on%20the%20Reproductive%20Performance%20of%20Muturu%20Cows%20Crossed%20with%20White%20Fulani%20Semen%20under%20Natural%20Grazing%20Condition_%20A%20Research%20Work.pdf
ijeab.com/submit-paper/
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